Listen to Heart Attack (In the Style of Demi Lovato) [Karaoke Version] online. Heart Attack (In the Style of Demi Lovato) [Karaoke Version] is an English language song and is sung by Zoom Karaoke. Heart Attack (In the Style of Demi Lovato) [Karaoke Version], from the album Zoom Karaoke - Pop Box 2, was released in the year 2013. The duration of the song is 3:33. Download English songs online from JioSaavn.